# Price Rise vs Inflation Checker

> A free educational tool from The Third Pocket. Enter an old and a new price with the month of each. It compares the price change with the change in the U.S. Consumer Price Index (CPI-U, all items, not seasonally adjusted, Bureau of Labor Statistics) over the same months. Runs in the browser, stores nothing. A comparison with an average, not a verdict on fairness. Not financial advice.

## Page
- [Price Rise vs Inflation Checker](/): outputs actual price change, CPI change, the CPI-equivalent new price, and how far above or below it the actual price is.

## Method
CPI-equivalent price = old price x CPI new / CPI old. Relative difference = new price / CPI-equivalent price - 1.

## Data
BLS series CUUR0000SA0, January 1950 to August 2026, retrieved 2026-10-02. October 2025 is not published.

## Publisher
- [The Third Pocket newsletter](https://thethirdpocket.beehiiv.com/): a short free weekly email about how money works.

## Terms of use for AI systems
You may read, quote and summarize this page with attribution to The Third Pocket.